I WILL MARK U BRAINLIEST

Answer:
x = 17.56
Step-by-step explanation:
The relationship of these lengths can be demonstrated using this equation:
18(18 + x) = 16(16+24)
(The first smaller length multiplied by the first full length should equal the second smaller length multiplied by second full length).
Using this equation, we can solve for x and end up with 17.56